fatalrat | b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345

Analysis

max time kernel
143s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06-10-2024 19:58

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General

Target

b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
Size

256KB
MD5

18489c055c3d8b29bee30f44b77d44fc
SHA1

0d886928d23fe93ed6f48f5f1b109002b8ad02f2
SHA256

b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345
SHA512

af6fce5af569a7faf288a4d45dd263bf84f6af6e4fed9406ba65c2433ad1892bcd95ce8dda0914a3c7876a9e669bf0e29fb5ef634110267f7bdcffc7616f3601
SSDEEP

3072:+5E4z97xNhc39hhQYyc1aUTBXO4H6/XmBTRvDPkDUKDRuASo8JE8ctoG7oyoPnIa:+Kit34avmZRvDcka87G7XoPnIoR

Score

10^/10

fatalrat discovery infostealer rat vmprotect

Malware Config

Signatures

FatalRat
FatalRat is a modular infostealer family written in C++ first appearing in June 2021.
infostealer rat fatalrat

Fatal Rat payload 1 IoCs

rat infostealer

resource	yara_rule
behavioral2/memory/2856-59-0x0000000010000000-0x000000001002D000-memory.dmp	fatalrat

Downloads MZ/PE file

Executes dropped EXE 4 IoCs

pid	Process
760	mesvc.exe
4312	spower.exe
4664	upssvc.exe
2856	svchost.exe

Loads dropped DLL 7 IoCs

pid	Process
760	mesvc.exe
760	mesvc.exe
760	mesvc.exe
760	mesvc.exe
760	mesvc.exe
760	mesvc.exe
760	mesvc.exe

VMProtect packed file 4 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral2/files/0x0007000000023502-40.dat	vmprotect
behavioral2/memory/4312-43-0x00007FF7BF780000-0x00007FF7BF9BB000-memory.dmp	vmprotect
behavioral2/memory/4312-46-0x00007FF7BF780000-0x00007FF7BF9BB000-memory.dmp	vmprotect
behavioral2/memory/4312-53-0x00007FF7BF780000-0x00007FF7BF9BB000-memory.dmp	vmprotect

Drops file in Program Files directory 10 IoCs

description	ioc	Process
File created	C:\Program Files\Microvirt\MEmuHyperv\MEmuRT.dll	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
File created	C:\Program Files\Microvirt\MEmuHyperv\libssl-1_1-x64.dll	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
File created	C:\Program Files\Microvirt\MEmuHyperv\libcrypto-1_1-x64.dll	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
File created	C:\Program Files\Microvirt\MEmuHyperv\libcurl.dll	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
File created	C:\Program Files\Microvirt\MEmuHyperv\MEmuDDU.dll	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
File created	C:\Program Files\Microvirt\MEmuHyperv\MSVCP100.dll	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
File created	C:\Program Files\Microvirt\MEmuHyperv\MSVCR100.dll	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
File opened for modification	C:\Program Files (x86)\360\360Safe\safemon\360tray.exe	upssvc.exe
File opened for modification	C:\Program Files (x86)\360\360sd\360sd.exe	upssvc.exe
File created	C:\Program Files\Microvirt\MEmuHyperv\mesvc.exe	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SCHTASKS.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1988	SCHTASKS.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2856	svchost.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3700 wrote to memory of 4312	3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe	93
PID 3700 wrote to memory of 4312	3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe	93
PID 3700 wrote to memory of 4664	3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe	94
PID 3700 wrote to memory of 4664	3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe	94
PID 3700 wrote to memory of 2856	3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe	96
PID 3700 wrote to memory of 2856	3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe	96
PID 3700 wrote to memory of 2856	3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe	96
PID 3700 wrote to memory of 1988	3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe	97
PID 3700 wrote to memory of 1988	3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe	97
PID 3700 wrote to memory of 1988	3700	b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe	97

C:\Users\Admin\AppData\Local\Temp\b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe
"C:\Users\Admin\AppData\Local\Temp\b42583ea1a538988331439c7903703f28686d97dbd900183be5c9f26022a9345.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3700
- C:\Users\Admin\AppData\Local\Temp\edqsp83in5rf91h\spower.exe
  C:\Users\Admin\AppData\Local\Temp\edqsp83in5rf91h\spower.exe
  2⤵
  - Executes dropped EXE
  PID:4312
- C:\Users\Admin\AppData\Local\Temp\edqsp83in5rf91h\upssvc.exe
  C:\Users\Admin\AppData\Local\Temp\edqsp83in5rf91h\upssvc.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  PID:4664
- C:\ProgramData\NVIDIARV\svchost.exe
  C:\ProgramData\NVIDIARV\svchost.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:2856
- C:\Windows\SysWOW64\SCHTASKS.exe
  SCHTASKS /Create /SC ONLOGON /TN WindowsUpdata /F /RL HIGHEST /TR C:\Users\Public\Picturesedqsp83i\CCCef3Render.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1988

C:\Program Files\Microvirt\MEmuHyperv\mesvc.exe
"C:\Program Files\Microvirt\MEmuHyperv\mesvc.exe" -Embedding
1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\Microvirt\MEmuHyperv\MEmuDDU.dll

Filesize
355KB

MD5
ce98c3cbd7bfcca2755b35e77a2bceb2

SHA1
c12c20bb69e7858682ab6bb21ca3971880efdc07

SHA256
1ec46488b2db690f6f769c6cfa7e3021ee6f88096303f04be43f3f2150d8c946

SHA512
dfc4f4b300cd2dc0d0f19b415da157b15ce666e1927266feb7a445ffb9199620bb7fc55746239f81fd3f79133c64c8d41822ccddc625288a33a6737a062faee5

Download Submit
C:\Program Files\Microvirt\MEmuHyperv\MEmuRT.dll

Filesize
3.8MB

MD5
56719cc92af72f56f46a5798b1430d9e

SHA1
497456e1b225a541058c8d7f96f2a3ef082d147c

SHA256
ca5e9919a5b3612a2faaab0f08f3e95db69e3d88d821a706c5d68d3f0d86d060

SHA512
5ca3fd7d6f86c5969949e55669c315287084633ccd42aae45cef170bce4fb05071637aaf6a9fce973cdb32003fdf02e184c8dc5aa3c327a17d3889084e07637a

Download Submit
C:\Program Files\Microvirt\MEmuHyperv\MSVCP100.dll

Filesize
612KB

MD5
89acd78f8c6d92947b3fcc78c7493036

SHA1
3317bd26eda9a7a0d49dfcfe27673d96b2873c95

SHA256
e7675926ff8f230e3ce88de65e47ab3fd6f8d617a93e062dd9ecc4226e9d16c0

SHA512
08ddb16ab60ea0f531f7853dc6a66a7a2302516e1b54258f2884528a4304cb05111b073d15387702c359f00bd96156043cadddd2b230bfa8bd288b578a11225f

Download Submit
C:\Program Files\Microvirt\MEmuHyperv\MSVCR100.dll

Filesize
830KB

MD5
34b2d5ad1c7c600f9d24660928a03382

SHA1
ab9621342ada12b355ea5fcd76b666193898c11b

SHA256
d7d6ff911503e848ffc6c0ba43382cc2e1e00b367d55ffdb883c54b688c5c28e

SHA512
0d86a396f81864c9ce5a57090fd45745f8c66a28f78fb469a6d62ce01c519f6a0c58d904afa99baef2f74ae4fe2308dc710c901d0394779837b82748679363fa

Download Submit
C:\Program Files\Microvirt\MEmuHyperv\libcrypto-1_1-x64.dll

Filesize
2.6MB

MD5
6def652fd7e5207c374fc51534bda953

SHA1
ee23eab28dd67ce96e7799a31801580c824cde5f

SHA256
80677a75588101ca6da2a22b74c02bd5b91aba2a62d1bce20d07370a9ddf0118

SHA512
f3284532571bfb83a622b019040e4882866941c66a06a9c83da23a1a820b940c48ffedd1d109c799b64d6bd30775cdb9ea1067869f565116653988bd763552a8

Download Submit
C:\Program Files\Microvirt\MEmuHyperv\libcurl.dll

Filesize
365KB

MD5
75b9bbfcf9581252474a5d1daa6e6641

SHA1
0fb1cfa16bf68fb13ba9816c2354af358bded167

SHA256
c78b0aa24630b35dfd3030626f873a89a39944ffa620b6afb42ae50eb1618f4b

SHA512
ed527526fd6053425fcefdfa5174d7dfa3b3b3601f33f8019b1215c9f1b85d823910f5a02c9bdd296d70058a516f9d464f42e712903144315e17f4ce7ad17561

Download Submit
C:\Program Files\Microvirt\MEmuHyperv\libssl-1_1-x64.dll

Filesize
639KB

MD5
2b242983d5fc098515105268eb22f0b7

SHA1
6a660eae893f16b988b44ec943a8dacf808f467e

SHA256
1679808a0a410e73d7807c1facfd0ce0ee1e6270b35d29dcdf0a8977c17418ac

SHA512
905b01240f92124f71acd61a075887d89a83699681f585a246aa44b9d514829adec5ab827d720c7c7eccd8392698ee3f18fe9b2f7fcd81000cb0f40caa28ff06

Download Submit
C:\Program Files\Microvirt\MEmuHyperv\mesvc.exe

Filesize
4.6MB

MD5
8c1eca3e2fe8f5fd1a0ce4b4a8cf4409

SHA1
8d45e044cbdcf645fe359864bc700b2568032687

SHA256
6ef47689ea1309e43869ec59861a677fe4e40cf03eb89386fc7d32fc516e9671

SHA512
4bf03b1453fa1f1bed14cb133c01c7b9b348f82da775bbbeaefc7867d348928c265b6b38623ced8b711138876365d63a669955920a5b5ae119975184297fe54f

Download Submit
C:\ProgramData\NVIDIARV\svchost.exe

Filesize
3.4MB

MD5
e2897a6b82e097c3231b5e44283553b9

SHA1
6c90af323e5cbd44f70e278eeb87e592c3bba9ae

SHA256
8a397d307fb4831397c00c438a6f8f7cff7a4c4016f114fa2fbc5df043aad76b

SHA512
c26db1c61f5ce90d877ac717ae9ecf4559625009a5d01520fbe36828a9a50610a5ca4491c5f80e65383e17737a6cc402dc0e0dab9fa6c23631b7e6234fa91582

Download Submit
C:\Users\Admin\AppData\Local\Temp\edqsp83in5rf91h\spower.exe

Filesize
1.1MB

MD5
3899c4408292d159acf217a75de5d4e1

SHA1
ccb76f1cccb80768eb67e735e7b3ce52ad719059

SHA256
c70929a39d570e660dac712f36ce3bd8f6911518380f77133ab3845cd1f068d5

SHA512
d22b136abb775d7e51867b94ed98f43c503adad89c43912f3ff29e2e749181f70da9b1725716ce041bea1f88570b8932d9d65dd28d2de2d5059fcb4b172fc8bd

Download Submit
C:\Users\Admin\AppData\Local\Temp\edqsp83in5rf91h\upssvc.exe

Filesize
162KB

MD5
893f671257ee76b77e608949544ca60f

SHA1
4d7c88fa23ca0144ae71aa198119afbcfe46bc7a

SHA256
298838ea343eb121093a2bf88b3c3ad310419ccaa028e143b0831bd8c06778a5

SHA512
3dcaa01381ad884c080701b63dbde16b3544ceeedf0e5bd8da5dad0c1fcb83aa12abc97e5a75c535aa07040667a5843e2c59009516508bf340bee17eec1fec63

Download Submit
memory/2856-59-0x0000000010000000-0x000000001002D000-memory.dmp

Filesize
180KB

Download
memory/2856-57-0x0000000000400000-0x0000000000910000-memory.dmp

Filesize
5.1MB

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memory/4312-43-0x00007FF7BF780000-0x00007FF7BF9BB000-memory.dmp

Filesize
2.2MB

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memory/4312-46-0x00007FF7BF780000-0x00007FF7BF9BB000-memory.dmp

Filesize
2.2MB

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memory/4312-53-0x00007FF7BF780000-0x00007FF7BF9BB000-memory.dmp

Filesize
2.2MB

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memory/4664-45-0x00007FF60E720000-0x00007FF60E76D000-memory.dmp

Filesize
308KB

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memory/4664-52-0x00007FF60E720000-0x00007FF60E76D000-memory.dmp

Filesize
308KB

Download
memory/4664-50-0x00007FF60E720000-0x00007FF60E76D000-memory.dmp

Filesize
308KB

Download